Hinge construction



J1me 1942- v. A. GRNBER G ETAL 2,285,510

HINGE CONSTRUCTION Filed Jan. 15; 1941 INVENTORS f 1 ATTORNEYYJ.

Patented June 9, 1942 UNITED STATES TENT OFFICE HINGE CONSTRUCTION Application January 13, 1941, Serial No. 374,144

Claims.

This invention relates to improvements in door hinges, and more particularly in hinges of the concealed type which are located within the casing or cabinet having the opening which is closed by the door, and are constructed to cause the door to swing out to an open position ofiset laterally beyond the adjacent side edge of the door opening.

Particular objects of the invention are to provide a practical and desirable hinge of novel construction which is especially suitable for relatively thin light doors, such, for example as used for closing the typewriter housing compartments of pedestal typewriter desks; which is constructed to place and stop the door in an open position projecting outwardly substantially at right angles to the plane of the door opening and offset laterally considerably beyond the adjacent side edge of the opening; which is constructed so that when opening the door it will first move forwardly substantially straight out of the door opening to clear the portion of the jamb or desk leg which projects forwardly from the plane of the closed door and then laterally out around the jamb or leg through a substantially 90 degree are to the open position; which is constructed of light, low cost material having the minimum number of parts of a very simple assembly; which although being constructed of light, inexpensive parts which may be stamped from flat sheet metal stock, nevertheless provides a firm strong support for the door which will prevent it from sagging. or deflection from its intended upright position; which is of a construction especially adapting the hinge for application to desks or cabinets of sheet metal construction and enables the same to be securely and strongly mounted in position with the minimum labor.

Further objects and advantages of the invention will appear from the following specification of the preferred embodiment of the invention, shown in the accompanying drawing, and the novel features of the invention are set forth in the appended claims.

In said drawing:

Fig. 1 is a front elevation, on a reduced scale, showing a metal typewriter desk in which the door for the pedestal compartment, which houses the typewriter, is hung by means of hinges embodying the invention, said door being shown in the open position.

Fig, 2 is a sectional plan view, enlarged, on line 2-2, Fig. 1, but showing the position of the parts when the door is closed.

Fig. 3 is a similar sectional plan view showing the position of the parts when the door is open.

Fig. 4 is a sectional elevation on line 44, Fig. 2.

Fig. 5 is a section on line 55, Fig. 3, showing the hinge in elevation with the door open.

Fig. 6 is a detail section on line 66, Fig. 2.

The desk shown in Fig. 1 has a pedestal 10 forming a casing or compartment in which a typewriter or analogous machine is adapted to be housed and furnished with a front door ll adapted to close the door opening l2 in the front of the pedestal through which the machine is adapted to be withdrawn for supporting it in position for operation. The door is mounted to open and close by hinges 13, of which two are shown, adjacent the top and bottom ends of the door. These hinges are alike and only one is described in detail in the following description.

The hinge comprises a casing or supporting member in the form of a horizontal plat l5 which is stationarily secured in the compartment at one side, adjacent the front end thereof, a door member or arm l6, which is stationarily secured on the inner or rear side of the door adjacent its hinged edge, and a curved link I! which is arranged to lie on and is supported by the plate l5, and is pivoted at one end at l8 to the plate and is pivotally connected at I9 to the door arm.

The door arm member it, which may be fastened to the door by screws passing through an angularly bent part of the member, extends rearwardly inward from the door and has an inner end portion 20 which is curved or extends laterally outward or beyond the vertical plane of the adjacent side edge of the door opening, and has secured on its end portion a stud 2! which is arranged to travel in a slot 22 in the supporting plate l 5. This slot, as shown, has a forward portion which curves part way around the link pivot l8 somewhat eccentrically thereto, and a rear portion which inclines from said curved portion rearwardly and laterally outward beyond the vertical plane of the adjacent side edge of the door opening. In order to ensurefree, easy relative movement of the parts of the hinge without binding, the pivot l9 connecting the door member l6 and the link I! preferably has a shouldered shank passing through the door member and a reduced end riveted to the link, and the pivot stud 2|, which slidably connects the door member with the supporting plate, is secured to the door member, as by a nut 23 screwed on the threaded end of the stud 2|, and a roller or sleeve 24 loosely surrounds the shank of the stud within the slot 22. A loose washer 25 is also preferably interposed between the enlarged head of the stud and the under side of the supporting plate IS. The sleeve and washer reduce friction and insure free, easy travel of the pivot stud in the curved slot 22, and the enlarged head of the stud is adapted to bear upwardly against the bottom of the supporting plate to prevent sagging or tipping of the door, as will more clearly appear presently.

Preferably the link IT bears fiat upon the top face of the supporting plate and is adapted to slide thereon between the same and the inner end of the door arm l6, and the link ll has an extension portion 25 which, when the door is closed, extends forwardly beyond the pivot 19 connecting the link and door member, and is adapted to bear upwardly against the under side of the door member. This formation and ar-' rangement of the supporting plate, door member and link forms a very strong support against vertical or downward sagging cr deflection of the door, since the link bears and slides upon the horizontal top face of the stationary supporting plate and bears upwardly against the underside of the door member or arm I 6, and the pivot stud 2| at the inner end of the door arm I6 is adapted to bear upwardly against the supporting plate l5. Thus, notwithstanding that the parts are preferably made of flat metal stampings, the door is adequately supported vertically against downward sagging or deflection.

The casing member or plate 15 of the hinge is preferably stationarily secured in the casing or pedestal compartment as follows:

The inner end of the plate 15 is secured, as by a screw 27, to the horizontal, outwardly projecting portion of an angle bracket 28, which may be rigidly secured, as by rivets 29, to the sheet metal side wall 30 of the pedestal. The pedestal side wall 35, at its front portion, is bent into channel or U-form in horizontal cross section to form the door casing part or jamb at the hinged side of the door, this channel-shaped jamb or part having an inwardly extending flange 3| which forms the adjacent upright side of the door opening. The hinge plate l extends forwardly into the channel of the door jamb and is secured to and supported by a U-shaped bracket 32 which is seated in a horizontal slot 33 in the inner edge of the flange 3| of the door jamb, the bracket 32 having upwardly and downwardly bent, vertical flanges 34 which are secured, as by screws 35 to the jamb flange 3 I. The front end of the hinge plate member l5 extends in between the parallel legs of the U-bracket so as to bear on the bottom leg of the bracket and may be secured thereto, as by the rivet is which pivotally connects the swinging link I I to the hinge plate l5. As shown, this rivet has shouldered ends riveted to the legs of the bracketso as to rigidly connect these together and secure the casing member and link in place between the legs of the bracket without pinching or binding the link member so as to interfere with its free swinging movements. The hinge plate I 5 is also shown as having a shoulder 36 engaging the rear end of the U-bracket to further assist in the rigid mounting of the hinge plate on the pedestal or door casing.

The desk pedestal, as shown, has a supporting leg at its outer front corner which forms an upright corner molding 0r finishing strip 31 at this corner of the pedestal. This molding projects forwardly beyond the plane of the front face of the door when it is closed, and thus makes a forwardly projecting shoulder at the hinged edge of the door which the door must clear or move past or around when being opened and closed.

By constructing the hinges as described, the door can close in the door opening between forwardly projecting portions of the jambs or upright parts of the casing at opposite edges of the door, and when the door is opened, the cooperating action of the swinging link and sliding stud and slot connection between the door and casing members will cause the door to first move out substantially straight forwardly or parallel with itself, as indicated by broken lines in Fig. 2, before it swings out around the projecting part of the jamb at the hinged edge of the door. The door can swing out to and will be stopped, by engagement of stud 2| with the front end of slot 22, in an open position, shown in Fig. 3, in which it projects forwardly substantially at right angles to its closed position and in a vertical plane offset laterally a considerable distance beyond the hinge side of the door opening, and preferably laterally beyond the outer side face of the door jamb.

We claim as our invention:

1. A door hinge comprising a stationary casing member secured in the door casing, a door member secured to the door and projecting rearwardly inward from the door and having a laterally extending rear end portion carrying a stud arranged to slide in a slot in said casing member which slot extends rearwardly inward and laterally from a point adjacent the hinged edge of the door, and a link which is pivoted to the door member adjacent the junction of its inwardly and laterally extending portions and is pivoted to thecasing member forwardly of its pivotal connection with the door member in the closedposition of the door, said link and stud and slot connection cooperating when the door is opened to first move the door substantially straight out forwardly from its closed position and then swing the door around to a position in which it extends forwardly from the casing in a plane offset laterally beyond the adjacent side of the door opening.

2. A door hinge comprising a stationary member, a door member secured to and projecting from the door, a stud secured to the projecting portion of the door member and arranged to travel in a slot in the stationary member when opening and closing the door, and a swinging link pivoted to the stationary member and to the door member and slidably bearing against one face of the stationary member, said stud having a head which slidably bears against the opposite face of the stationary member, and said link having a free end extending beyond its pivotal connection with the door member and slidably bearing against a face of the door member which faces oppositely to said first mentioned face of the stationary member.

3. A door hinge comprising a stationary member, a door member secured to and projecting from the door over said stationary member, a stud secured to the projecting portion of the door member and arranged to travel in a slot in the stationary member when opening and closing the door, and a swinging link arranged between the stationary and door members and pivoted to the stationary member and to the door member, and slidably bearing on the upper face of the stationary member, said stud having a head which slidably bears against the under face of the stationary member, and said link having a free end extending beyond its pivotal connection with the door member and slidably bearing against the under side of the door member.

4. A door hinge which comprises parts arranged and related substantially as set forth in claim 1, and in which said casing member consists of a fiat horizontal supporting plate having a guide slot therethrough, said door member has a horizontal arm projecting from the door over said plate, said stud has a head which bears upwardly against the under side of the plate, and said link is a thin flat link arranged between said plate and said arm and pivoted to the plate and to the arm, and slidably bears on the upper face of said plate and against the under face of said arm in all positions of the parts of the hinge.

5. A door hinge which comprises parts arranged and related substantially as set forth in claim 1, and in which each of said stationary, door and link members consists of a flat plate disposed horizontally, said link member slidably bears on the upper face of the stationary member and against the under face of the door member,- and said stud has a head bearing upwardly against the under side of the stationary member.

VICTOR A. GRONBERG. LEVI M. HULTBERG. 

